Small error at channelFoam case mesh

juanma · February 3, 2012, 13:54

Dear all,

I just found out a tiny error inside the blockmeshDict:

blocks
(
hex (0 1 3 2 6 7 9 8) (40 25 30) simpleGrading (1 10.7028 1)
hex (2 3 5 4 8 9 11 10) (40 25 30) simpleGrading (1 0.0984 1)
);

For the mesh to be symmetric the simpleGrading should be:

(1 0.0934 1)

... or change the first one to (1 10.1626 1). I haven't checked what values make the cells in the center of the channel perfectly square, but with such a small difference I guess is more important to have the same growth ratio.

I've checked versions 1.5 to 2.0.1. It would be nice if the value is corrected for further releases.

Thanks,
Juanma

wyldckat · February 4, 2012, 11:11

Greetings Juanma,

Nice catch! I haven't checked this myself either, but if you really want this fixed, then you should report on the official bug tracker: http://www.openfoam.com/mantisbt/my_view_page.php

Best regards,
Bruno

juanma · February 6, 2012, 12:31

Error fixed by mattijs for further releases.
Thanks

ron_OFuser · January 22, 2015, 04:56

Which OF version is bug free (mesh grading)?

wyldckat · January 22, 2015, 15:17

Quote:

Originally Posted by ron_OFuser

Which OF version is bug free (mesh grading)?

Quick answer: This was fixed in OpenFOAM 2.1.x: http://www.openfoam.org/mantisbt/view.php?id=413

edit: And this fix was included in 2.1.1.

February 3, 2012, 13:54	Small error at channelFoam case mesh	#1
juanma New Member Juan Manuel Mompó Laborda Join Date: Nov 2009 Location: Valencia (Spain) Posts: 10 Rep Power: 17	Dear all, I just found out a tiny error inside the blockmeshDict: blocks ( hex (0 1 3 2 6 7 9 8) (40 25 30) simpleGrading (1 10.7028 1) hex (2 3 5 4 8 9 11 10) (40 25 30) simpleGrading (1 0.0984 1) ); For the mesh to be symmetric the simpleGrading should be: (1 0.0934 1) ... or change the first one to (1 10.1626 1). I haven't checked what values make the cells in the center of the channel perfectly square, but with such a small difference I guess is more important to have the same growth ratio. I've checked versions 1.5 to 2.0.1. It would be nice if the value is corrected for further releases. Thanks, Juanma

February 4, 2012, 11:11		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,981 Blog Entries: 45 Rep Power: 129	Greetings Juanma, Nice catch! I haven't checked this myself either, but if you really want this fixed, then you should report on the official bug tracker: http://www.openfoam.com/mantisbt/my_view_page.php Best regards, Bruno __________________ OpenFOAM: FAQ \| Getting started Forum: How to get help, to post code/output and forum guide Read this before sending me PM

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February 6, 2012, 12:31		#3
juanma New Member Juan Manuel Mompó Laborda Join Date: Nov 2009 Location: Valencia (Spain) Posts: 10 Rep Power: 17	Error fixed by mattijs for further releases. Thanks

January 22, 2015, 04:56		#4
ron_OFuser Member Ron Join Date: Jul 2014 Location: Japan Posts: 40 Rep Power: 12	Which OF version is bug free (mesh grading)?